If 5 slices of pizza cost $5:50 how much does

-two slices cost

-ten slices cost

-and half a slice

Cost per slice = ($5.50)/(5 slices) = $1.10/slice

1) $1.10/slice*(2 slices) = $2.20
2) $1.10/slice*(10 slices) = $11.10
3) $1.10/slice*(1/2 slice) = $0.55

The first thing we must do for this case is to define variables.

We have then:

x: number of slices

y: total cost

We write the linear function that relates the variables.

We have then:

\( y = (\frac{5.50}{5}) * x \)

Then, we evaluate the number of slices to find the total cost.

-two slices cost:

We substitute x = 2 in the given equation:

\( y = (\frac{5.50}{5}) * 2\\y = 2.2 \)

Answer:

two slices = 2.2 $

-ten slices cost:

We substitute x = 10 in the given equation:

\( y = (\frac{5.50}{5}) * 10\\y = 11 \)

Answer:

ten slices = 11 $

-half a slice cost:

We substitute x = 1/2 in the given equation:

\( y = (\frac{5.50}{5}) * \frac{1}{2}\\y = 0.55 \)

Answer:

half a slice = 0.55 $


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